55761556 has 6 divisors (see below), whose sum is σ = 97582730. Its totient is φ = 27880776.

The previous prime is 55761551. The next prime is 55761557. The reversal of 55761556 is 65516755.

55761556 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 51351556 + 4410000 = 7166^2 + 2100^2 .

It is a super-2 number, since 2×55761556² = 6218702255082272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55761551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6970191 + ... + 6970198.

Almost surely, 2^55761556 is an apocalyptic number.

It is an amenable number.

55761556 is a deficient number, since it is larger than the sum of its proper divisors (41821174).

55761556 is a wasteful number, since it uses less digits than its factorization.

55761556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13940393 (or 13940391 counting only the distinct ones).

The product of its digits is 157500, while the sum is 40.

The square root of 55761556 is about 7467.3660684340. The cubic root of 55761556 is about 382.0424557401.

The spelling of 55761556 in words is "fifty-five million, seven hundred sixty-one thousand, five hundred fifty-six".